"I've been your fan for 10 yrs now and i'm so happy you found someone that really deserves you", wrote one fan while another said "OMG I CAN'T BELIEVE IT!"

The Game of Thrones star has been dating the American singer/songwriter since November of a year ago.

She explained: "You do feel like you're living in a fishbowl. It's frustrating that it's the most mundane things that make the news - how boring!" Congratulations to my brother... and sister-in-law to be on your engagement. "There are really no other headlines?"